[PATCH 17/43] kmsan: handle task creation and exiting

[Alexander Potapenko]

Tell KMSAN that a new task is created, so the tool creates a backing
metadata structure for that task.

Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
---
Link: https://linux-review.googlesource.com/id/I0f41c3a1c7d66f7e14aabcfdfc7c69addb945805
---
 kernel/exit.c | 2 ++
 kernel/fork.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/kernel/exit.c b/kernel/exit.c
index f702a6a63686e..a276f6716dcd5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -59,6 +59,7 @@
 #include <linux/writeback.h>
 #include <linux/shm.h>
 #include <linux/kcov.h>
+#include <linux/kmsan.h>
 #include <linux/random.h>
 #include <linux/rcuwait.h>
 #include <linux/compat.h>
@@ -767,6 +768,7 @@ void __noreturn do_exit(long code)
 
 	profile_task_exit(tsk);
 	kcov_task_exit(tsk);
+	kmsan_task_exit(tsk);
 
 	coredump_task_exit(tsk);
 	ptrace_event(PTRACE_EVENT_EXIT, code);
diff --git a/kernel/fork.c b/kernel/fork.c
index 3244cc56b697d..5d53ffab2cda7 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -37,6 +37,7 @@
 #include <linux/fdtable.h>
 #include <linux/iocontext.h>
 #include <linux/key.h>
+#include <linux/kmsan.h>
 #include <linux/binfmts.h>
 #include <linux/mman.h>
 #include <linux/mmu_notifier.h>
@@ -955,6 +956,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node)
 	account_kernel_stack(tsk, 1);
 
 	kcov_task_init(tsk);
+	kmsan_task_create(tsk);
 	kmap_local_fork(tsk);
 
 #ifdef CONFIG_FAULT_INJECTION
-- 
2.34.1.173.g76aa8bc2d0-goog